2-Hydroxy-4-methylpyridine-3-carbonitrile (CAS NO.93271-59-1), its Synonyms are 3-Pyridinecarbonitrile,1,2-dihydro-4-methyl-2-oxo- ; 4-Methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile .